Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 1 - Section 1.1 - Introduction to Algebra: Variables and Mathematical Models - Exercise Set - Page 11: 47

Answer

not a solution

Work Step by Step

4z = 20;10 To check whether 10 is the solution of the given expression, Substitute 10 for z 4*10 = 20 (multiply 4*10) 40 $\ne$ 20 The statement is false because the values on both sides of the equation are not same, the number 10 is not the solution of the equation.
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